Water-meter.



H. I. DILTS. WATER METER. urmouxon FILED MAR. 18, 1910.

66,31 0 Patented Aug. 2, 1910.

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HENRY I. DILTS, OF NEW YORK, N. Y., ASSIGN'OB T0 NEPTUNE METER COMPANY, OF

NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

WATER-METER.

Specification of Letters Patent,

Patented Aug. 2, 1910.

To all whom it may concern:

Be it known that I, HENRY I. DIL'rs, a citizen of the United States, residing in Long Island City, in the borough of Queens of the city of New York, in the State of New York, have invented certain new and useful Improvements in Water-Meters, of whichithe following is a specification, reference being had to the accompanying drawing, forming a part hereof.

This invention relates to compound water meters in which a high-duty metering device and a low-duty metering device are combined, a valve, operated by variations in the pressure difl'erential, acting to permit the flow through one of such meters, and to prevent the flow through the other of such meters, andit is particularly concerned with the construction of the valve byvwhich the flow through one meter or the other is determined. In accordance with this invention the valve which controls the passage of the liquid through one metering device or the other is connected with a piston which is subject on the one side to the inflow pressure and on the other side to the outflow pressure.

The invention will be more fully explained hereinafter with reference to the accompanying drawing which presents a view, partly in elevation and partly in vertical section, of a compound meter which embodiesthe invention.

As in the structure represented in the drawing, the relatively high-duty metering device a and the relatively lowduty metering device 6, are preferably, although not necessarily, combined in a single structure. These metering devices, moreover, may be of any suitable character, the metering device a bein shown as of the turbine type, which is wel adapted to register accurately large flows of liquid, while the metering device b is ofthe nutating disk type, which is well adapted to register accurately small flows of liquld. The metering devices are respectively provided, as usual, with registering mechanisms, as at a and b. In the struc-' ture shown, there is a common inlet or inflow opening for the liquid at o and a common outlet or outflow at cl. The liquid which enters at the inlet 0 asses into a chamber 6 from which, according to the position of the valve hereinafter referred to, it

flows either through that branch of the com- 'monconduit which includes the high-duty metering device a and the channel 6, into the chamber f, whence it escapes through the outlet d, or through that branch which includes the channel g, the low duty metering device If and the channel h, into the chamber f. v

Between the channel 6 and the chamber f is a diaphragm or wall 2', in which is formed a port is through which communication may be established between the branch 6 and the outlet chamber f. The liquid which flows through the other branch, which includes the loweduty meter, is conducted through the channel it, which may be formed in the wall of the chamber f and terminates in a port h adjacent to the port is. In the wall 11 is formed a cylindrical chamber Z which communicates at one end with the high-duty branch '6 and at the other end with the outflow chamber f, and in the chamber l is disposed a piston m which is subject on one side to the pressure in the branch e, which is the inflow pressure, and on theother side, to'the pressure in the chamber f, which is the outflow pressure, and istherefore subject to variatlons in the pressure differential. To the piston rod m is secured by means of piston rod m a valve body n which is adapted, in one osition of the piston m, to cover and close t e port is, and therefore to prevent flow of liquid through the meterin device a,"while leaving the port h uncovere and therefore permitting flow through the metering device I), and is adapted'in another position of the piston m, to cover and close the port-h and to'uncover the port is, thereby permitting flow through the metering device a and preventing flow through the metering device I). The chamber Z is preferably arranged with its axis horizontal and in order that the piston may be held against the normal low pressure, so as to prevent flow under that condition through the hi h duty meter, a bell crank lever 0 is mounted in the chamber f, one arm being connected to the piston through the valve body nand the piston rod m and the other or substantially horizontal arm having secured thereto a suitable weight p. Any substantial increase in the pressure differential, such as would be created-by a large flow, moves the piston m against the action of the weight 37 and moves close the port h. Otherwise the weight 10 -m0n conduit having branches in which the sition of the piston, a Wei hte bell crank lindrical chamber f rmed therein, opening Signed .inthe presence ofat one end into the high-duty branch and at ELLA J. KRUGER,

holds the iston min the position represent ber, a piston in said. cylindrical chamber, 20 ed in the drawing in which the valve body 1: subject on one side to the pressure in the closes theport '1: and opens the port it, perhigh-duty branch and on the other side to mitting flow through the low-duty meter the pressure in the outflow chamber, a valve 1 alone. body means whereby the valve body is ooh- I claim as my invention: nected to said' piston, and located in the out' '25 The combination of a relatively high-duty flow chamber and adapted to cover one or meter, arelat-ively low-duty meter, a 'com-. the other of said ports accordin to the po-- ,i

two meters are respectively located, the inlever, and means whereby t e lever is operflow and the outflow being common to both atively connected to the piston to hold it nor- 30 i branches, a wall between the high-duty mally against low pressure in the high duty branch and .the common outflow chamber branch.

having a port communicating with the hi h: This specification signed and witnessed duty branch and a port communicating with this 11th day of March, A. D. 1910. the low-duty br'anc the wall having a cy HENRY I. DILTS.

the other end into the common outflow cham- I I AMBROSE L. OSHEA. 

